I have something close-ish http://www.memex.ca/wp-content/uploads/old/M110545-Dostek-440A-BTR-User-Guide.pdf
Bill On Thu, May 16, 2024, 10:33 AM Michael Fritsch via cctalk < cctalk@classiccmp.org> wrote: > I have a Decitek 442A9 papertape reader which needs repair. > > I have already replaced the belt, but that is not enough. The reader > behaves very strangely. It > starts running as soon as I apply power. And there is another problem: > when I load a tape, it > rattles irregular during reading. This is not a mechanical problem, it > seems to react to the pulse > of the feed hole, which arrives at the wrong time. > I'm pretty sure, that I have to adjust the sprockets somehow relative to > the stop positions of the > stepper motor. > > It was nothing to be found online except pictures of a similar model 443A9 > at RICM: > https://www.ricomputermuseum.org/collections-gallery/equipment/dec-pdp-8s-4 > . > > The controller board number is 30291A > > Does anyone happen to have the manual and/or schematics or any other > documents? > > Thank you, > Micha > >
